Evolution Studios already gave us a MotorStorm release earlier this year with MotorStorm: Apocalypse, so we probably won't be seeing another disc-based release in the series next year. Fortunately, neither the PlayStation Vita nor the PlayStation Network needs to rely on discs.
There's a new trailer up on the PlayStation Blog for Evolution's MotorStorm RC, which shrinks the series' vehicles down to radio-controlled toy proportions. The gameplay more closely resembles that of the iOS game Death Rally than it does traditional MotorStorm, but that's hardly a bad thing. The trailer says that RC is "coming soon" to both the Vita and PSN and, best of all, you'll just need to buy one copy to play it on both.
Source: PlayStation Blog